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Functional neurosurgery

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https://www.readbyqxmd.com/read/29447255/hydroxyethyl-starch-for-volume-expansion-after-subarachnoid-haemorrhage-and-renal-function-results-of-a-retrospective-analysis
#1
Sven Bercker, Tanja Winkelmann, Thilo Busch, Sven Laudi, Dirk Lindner, Jürgen Meixensberger
BACKGROUND: Hydroxyethyl starch (HES) was part of "triple-H" therapy for prophylaxis and therapy of vasospasm in patients with subarachnoid haemorrhage (SAH). The European Medicines Agency restricted the use of HES in 2013 due to an increase of renal failure in critically ill patients receiving HES compared to crystalloid fluids. The occurrence of renal insufficiency in patients with SAH due to HES is still uncertain. The purpose of our study was to evaluate whether there was an association with renal impairment in patients receiving HES after subarachnoid haemorrhage...
2018: PloS One
https://www.readbyqxmd.com/read/29441169/perioperative-stroke-pathophysiology-and-management
#2
REVIEW
Sang-Bae Ko
Although perioperative stroke is uncommon during low-risk non-vascular surgery, if it occurs, it can negatively impact recovery from the surgery and functional outcome. Based on the Society for Neuroscience in Anesthesiology and Critical Care Consensus Statement, perioperative stroke includes intraoperative stroke, as well as postoperative stroke developing within 30 days after surgery. Factors related to perioperative stroke include age, sex, a history of stroke or transient ischemic attack, cardiac surgery (aortic surgery, mitral valve surgery, or coronary artery bypass graft surgery), and neurosurgery (external carotid-internal carotid bypass surgery, carotid endarterectomy, or aneurysm clipping)...
February 2018: Korean Journal of Anesthesiology
https://www.readbyqxmd.com/read/29419328/brain-focused-ultrasound-what-s-the-fus-all-about-a-review-of-current-and-emerging-neurological-applications
#3
Laure Bretsztajn, Wladyslaw Gedroyc
Magnetic resonance-guided focused ultrasound surgery (MRgFUS) allows for precise non-invasive thermal ablation of target tissues for a wide range of clinical applications. It is an innovative and rapidly expanding technology which has already established itself as an effective and safe incisionless alternative in the treatment of various soft tissue tumours, with many more research studies underway to extend its therapeutic envelope. The non-invasiveness of the procedure makes FUS particularly attractive in functional neurosurgery, where existing treatment options are not suitable for all patients...
February 8, 2018: British Journal of Radiology
https://www.readbyqxmd.com/read/29400686/prehab-vs-rehab-presurgical-treatment-in-vestibular-schwannoma-surgery-enhances-recovery-of-postural-control-better-than-postoperative-rehabilitation-retrospective-case-series
#4
Fredrik Tjernström, Per-Anders Fransson, Babar Kahlon, Mikael Karlberg, Sven Lindberg, Peter Siesjö, Måns Magnusson
OBJECT: To evaluate post-surgical postural stability when treating patients with remaining vestibular function with intratympanic gentamicin (PREHAB) prior to schwannoma surgery. METHOD: 44 consecutive patients with some form remaining vestibular function scheduled for vestibular schwannoma surgery. 20 were medically deafferented with intratympanic gentamicin before surgery and 24 were not. Both groups were of the same age, had the same tumor size, same type of surgery, and same perioperative sensory rehabilitation (training exercises), and no surgical complications...
2018: Journal of Vestibular Research: Equilibrium & Orientation
https://www.readbyqxmd.com/read/29397378/intraoperative-optical-imaging-of-metabolic-changes-after-direct-cortical-stimulation-a-clinical-tool-for-guidance-during-tumor-resection
#5
Martin Oelschlägel, Tobias Meyer, Gabriele Schackert, Matthias Kirsch, Stephan B Sobottka, Ute Morgenstern
Brain tumor resection is even today one of the most challenging disciplines in neurosurgery. The current state of the art for the identification of tumor tissue during the surgical procedure comprises a wide variety of different tools, each with its own limitations and drawbacks. In this paper, we present a novel approach, the use of optical imaging in connection with direct electrical cortical stimulation (DCS), for identification of impaired tumor tissue and functional intact normal brain tissue under intraoperative conditions...
February 5, 2018: Biomedizinische Technik. Biomedical Engineering
https://www.readbyqxmd.com/read/29396170/deep-brain-stimulation-for-dystonia-due-to-cerebral-palsy-a-review
#6
REVIEW
Antonio E Elia, Caterina F Bagella, Francesca Ferré, Giovanna Zorzi, Daniela Calandrella, Luigi M Romito
Cerebral palsy (CP) is a heterogeneous group of syndromes that cause a non-progressive disorder of early onset, with abnormal control of movement and posture. Various aetiologies can cause the CP clinical spectrum, but all have a disruption of motor control in common. CP can be divided into four major types based on the motor disability: predominant spastic, dyskinetic, ataxic and mixed form. Dyskinetic CP (DCP) is the most common cause of acquired dystonia in children. The treatment of DCP is challenging because most individuals have mixed degrees of chorea, athetosis and dystonia...
December 14, 2017: European Journal of Paediatric Neurology: EJPN
https://www.readbyqxmd.com/read/29385923/high-intensity-focused-ultrasound-past-present-and-future-in-neurosurgery
#7
Syed A Quadri, Muhammad Waqas, Inamullah Khan, Muhammad Adnan Khan, Sajid S Suriya, Mudassir Farooqui, Brian Fiani
Since Lynn and colleagues first described the use of focused ultrasound (FUS) waves for intracranial ablation in 1942, many strides have been made toward the treatment of several brain pathologies using this novel technology. In the modern era of minimal invasiveness, high-intensity focused ultrasound (HIFU) promises therapeutic utility for multiple neurosurgical applications, including treatment of tumors, stroke, epilepsy, and functional disorders. Although the use of HIFU as a potential therapeutic modality in the brain has been under study for several decades, relatively few neuroscientists, neurologists, or even neurosurgeons are familiar with it...
February 2018: Neurosurgical Focus
https://www.readbyqxmd.com/read/29385919/focused-ultrasound-in-neurosurgery-a-historical-perspective
#8
Maya Harary, David J Segar, Kevin T Huang, Ian J Tafel, Pablo A Valdes, G Rees Cosgrove
Focused ultrasound (FUS) has been under investigation for neurosurgical applications since the 1940s. Early experiments demonstrated ultrasound as an effective tool for the creation of intracranial lesions; however, they were limited by the need for craniotomy to avoid trajectory damage and wave distortion by the skull, and they also lacked effective techniques for monitoring. Since then, the development and hemispheric distribution of phased arrays has resolved the issue of the skull and allowed for a completely transcranial procedure...
February 2018: Neurosurgical Focus
https://www.readbyqxmd.com/read/29385917/a-meta-analysis-of-outcomes-and-complications-of-magnetic-resonance-guided-focused-ultrasound-in-the-treatment-of-essential-tremor
#9
Nasser Mohammed, Devi Patra, Anil Nanda
OBJECTIVE Magnetic resonance-guided focused ultrasound (MRgFUS) is a novel technique that uses high-intensity focused ultrasound to achieve target ablation. Like a lens focusing the sun's rays, the ultrasound waves are focused to generate heat. This therapy combines the noninvasiveness of Gamma Knife thalamotomy and the real-time ablation of deep brain stimulation with acceptable complication rates. The aim of this study was to analyze the overall outcomes and complications of MRgFUS in the treatment of essential tremor (ET)...
February 2018: Neurosurgical Focus
https://www.readbyqxmd.com/read/29382119/the-emerging-role-of-tractography-in-deep-brain-stimulation-basic-principles-and-current-applications
#10
REVIEW
Nelson B Rodrigues, Karim Mithani, Ying Meng, Nir Lipsman, Clement Hamani
Diffusion tensor imaging (DTI) is an MRI-based technique that delineates white matter tracts in the brain by tracking the diffusion of water in neural tissue. This methodology, known as "tractography", has been extensively applied in clinical neuroscience to explore nervous system architecture and diseases. More recently, tractography has been used to assist with neurosurgical targeting in functional neurosurgery. This review provides an overview of DTI principles, and discusses current applications of tractography for improving and helping develop novel deep brain stimulation (DBS) targets...
January 29, 2018: Brain Sciences
https://www.readbyqxmd.com/read/29378389/limits-of-endoscopic-endonasal-surgery-for-craniopharyngioma
#11
Douglas A Hardesty, Alaa S Montaser, André Beer-Furlan, Ricardo L Carrau, Daniel M Prevedello
Craniopharyngiomas represent one of the most challenging brain tumors for the neurosurgeon. For most of the 20th century, these parasellar lesions have been approached via the classic open approaches of neurosurgery such as pterional, frontobasal, interhemispheric, and transpetrosal craniotomies. The endoscopic endonasal approach to these tumors, rather than craniotomy, has risen in popularity over the last two decades. Regardless of approach, a detailed knowledge of surgical anatomy and careful preoperative surgical planning are essential to achieve good clinical results; iatrogenic morbidity can potentially be severe due to hypothalamus, optic apparatus, and/or vascular injuries...
January 26, 2018: Journal of Neurosurgical Sciences
https://www.readbyqxmd.com/read/29377631/a-silk-cranial-fixation-system-for-neurosurgery
#12
Keyin Liu, Zhifeng Shi, Shaoqing Zhang, Zhitao Zhou, Long Sun, Tao Xu, Yeshun Zhang, Guozheng Zhang, Xinxin Li, Liang Chen, Ying Mao, Tiger H Tao
Cranial fixation should be safe, reliable, ideally degradable, and produce no hazardous residues and no artifacts on neuroimaging. Protein-based fixation devices offer an exciting opportunity for this application. Here, the preclinical development and in vivo efficacy verification of a silk cranial fixation system in functional models are reported by addressing key challenges toward clinical use. A comprehensive study on this fixation system in rodent and canine animal models for up to 12 months is carried out...
January 26, 2018: Advanced Healthcare Materials
https://www.readbyqxmd.com/read/29371415/charting-the-road-forward-in-psychiatric-neurosurgery-proceedings-of-the-2016-american-society-for-stereotactic-and-functional-neurosurgery-workshop-on-neuromodulation-for-psychiatric-disorders
#13
Ausaf A Bari, Charles B Mikell, Aviva Abosch, Sharona Ben-Haim, Robert J Buchanan, Allen W Burton, Stephen Carcieri, G Rees Cosgrove, Pierre-Francois D'Haese, Zafiris Jeffrey Daskalakis, Emad N Eskandar, Jason L Gerrard, Wayne K Goodman, Benjamin David Greenberg, Robert E Gross, Clement Hamani, Zelma H T Kiss, Peter Konrad, Brian H Kopell, Lothar Krinke, Jean-Philippe Langevin, Andres M Lozano, Donald Malone, Helen S Mayberg, Jonathan P Miller, Parag G Patil, DeLea Peichel, Erika A Petersen, Ali R Rezai, R Mark Richardson, Patricio Riva-Posse, Tejas Sankar, Jason M Schwalb, Helen Blair Simpson, Konstantin Slavin, Paul H Stypulkowski, Tor Tosteson, Peter Warnke, Jon T Willie, Kareem A Zaghloul, Joseph S Neimat, Nader Pouratian, Sameer A Sheth
OBJECTIVE: Refractory psychiatric disease is a major cause of morbidity and mortality worldwide, and there is a great need for new treatments. In the last decade, investigators piloted novel deep brain stimulation (DBS)-based therapies for depression and obsessive-compulsive disorder (OCD). Results from recent pivotal trials of these therapies, however, did not demonstrate the degree of efficacy expected from previous smaller trials. To discuss next steps, neurosurgeons, neurologists, psychiatrists and representatives from industry convened a workshop sponsored by the American Society for Stereotactic and Functional Neurosurgery in Chicago, Illinois, in June of 2016...
January 25, 2018: Journal of Neurology, Neurosurgery, and Psychiatry
https://www.readbyqxmd.com/read/29347913/an-unusual-case-of-infective-pneumocephalus-case-report-of-pneumocephalus-exacerbated-by-continuous-positive-airway-pressure
#14
Abdus Samad Ansari, Brittany B Dennis, Dilip Shah, Winfred Baah
BACKGROUND: Pneumocephalus, illustrated by air in the cranial vault is relatively infrequent and generally associated with neurosurgery, trauma, meningitis and barotrauma. However cases of spontaneous non-traumatic pneumocephalus remain rare. While the relationship between continuous positive airway pressure (CPAP) and atraumatic pneumocephalus has been previously reported, to our knowledge the rare presentation associated with sinus wall osteomyelitis has never been described. We summarize here the case of a 67-year-old woman's acute presentation of Streptococcus salvarius infection after a sudden drop in her consciousness...
January 18, 2018: BMC Emergency Medicine
https://www.readbyqxmd.com/read/29341066/cerebral-near-infrared-spectroscopy-nirs-for-perioperative-monitoring-of-brain-oxygenation-in-children-and-adults
#15
REVIEW
Yun Yu, Kaiying Zhang, Ling Zhang, Huantao Zong, Lingzhong Meng, Ruquan Han
BACKGROUND: Various techniques have been employed for the early detection of perioperative cerebral ischaemia and hypoxia. Cerebral near-infrared spectroscopy (NIRS) is increasingly used in this clinical scenario to monitor brain oxygenation. However, it is unknown whether perioperative cerebral NIRS monitoring and the subsequent treatment strategies are of benefit to patients. OBJECTIVES: To assess the effects of perioperative cerebral NIRS monitoring and corresponding treatment strategies in adults and children, compared with blinded or no cerebral oxygenation monitoring, or cerebral oxygenation monitoring based on non-NIRS technologies, on the detection of cerebral oxygen desaturation events (CDEs), neurological outcomes, non-neurological outcomes and socioeconomic impact (including cost of hospitalization and length of hospital stay)...
January 17, 2018: Cochrane Database of Systematic Reviews
https://www.readbyqxmd.com/read/29332074/diffusion-tensor-imaging-of-the-basal-ganglia-for-functional-neurosurgery-applications
#16
Francesco Sammartino, Mojgan Hodaie
Since its introduction, diffusion tensor imaging (DTI) has become an important tool in neuroscience given its unprecedented ability to image brain white matter in vivo. The interest in understanding the mechanisms of action of Deep Brain Stimulation in different targets and indications, together with the constant drive towards the improvement in long-term clinical outcomes, has found a logical complement in the application of tractography in this field. Diffusion tensor imaging has been traditionally associated with an increased susceptibility to MRI artifacts, and expensive computational resources...
2018: Progress in Neurological Surgery
https://www.readbyqxmd.com/read/29332069/the-history-of-movement-disorder-brain-surgery
#17
L Dade Lunsford, Ajay Niranjan
The first surgical procedures for abnormal movement disorders began in the 1930s, when surgeons first proposed ablative techniques of the caudate nucleus or transection of motor (pyramidal) pathways to reduce involuntary movements in patients with Parkinson's related tremor. During the 50-year interval between 1945 and 1995, the development of precise intracranial guiding devices, brain maps, and advanced imaging led to the refinement of appropriate deep brain targets affecting extrapyramidal pathways. Lesional surgery and subsequent neuroaugmentation using deep brain stimulation extended the role of deep brain surgery for a wider group of patients with tremor, rigidity, dyskinesia, and other involuntary movement disorders...
2018: Progress in Neurological Surgery
https://www.readbyqxmd.com/read/29327096/-focused-ultrasound-ablation-as-tremor-treatment
#18
REVIEW
Sebastian R Schreglmann, Stefan Hägele-Link, Beat Werner, Ernst Martin, Georg Kägi
BACKGROUND: The development of high-intensity magnetic resonance imaging (MRI)-guided focused ultrasound (MRIgFUS) ablation has widened the spectrum of interventional techniques for stereotactic functional neurosurgery of lesions. This has resulted in novel incisionless intervention approaches for the therapy of tremor disorders. The safety and efficacy is documented by recent study data. OBJECTIVES: This article encompasses a description of the technological basis and typical course of MRIgFUS interventions, a comparison to alternative open or incisionless surgical techniques as well as a review of the current evidence base for MRIgFUS ablation in the context of lesional interventions to treat tremor...
January 11, 2018: Der Nervenarzt
https://www.readbyqxmd.com/read/29326290/functional-lesional-neurosurgery-for-tremor-a-systematic-review-and-meta-analysis
#19
REVIEW
Sebastian R Schreglmann, Joachim K Krauss, Jin Woo Chang, Kailash P Bhatia, Georg Kägi
BACKGROUND: This work evaluates the consistency, effect size and incidence of persistent side effects of lesional neurosurgical interventions in the treatment of tremor due to Parkinson's disease (PD), essential tremor (ET), multiple sclerosis (MS) and midbrain lesions. METHODS: Systematic review and meta-analysis according to PRISMA-P guidelines. Random effects meta-analysis of standardised mean difference based on a peer-reviewed protocol (PROSPERO no. CRD42016048049)...
January 11, 2018: Journal of Neurology, Neurosurgery, and Psychiatry
https://www.readbyqxmd.com/read/29309981/surgical-treatment-of-spinal-ependymomas-experience-in-49-patients
#20
Florian Wild, Christian Hartmann, Hans E Heissler, Bujung Hong, Joachim K Krauss, Makoto Nakamura
BACKGROUND: Ependymomas are rare tumors of the central nervous system. The local tumor distribution in the central nervous system is highly age-dependent as among adults ependymomas occur mostly in the spinal cord, whereas among children intracranial manifestations are more common. To date, there are no prospective studies about treatment strategies for ependymomas. In most cases complete tumor resection is recommended. The role of radiation therapy in low-grade ependymomas remains unclear...
January 5, 2018: World Neurosurgery
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